Snape had lost face because of Ye Ting, and the Gryffindors had taken great delight in it. But only a few days later, they got their comeuppance.
For Gryffindor's next match against Hufflepuff, Snape would be serving as referee.
The little lions were all dumbfounded. They deeply doubted Snape's fairness, but even their captain, Oliver Wood, could do nothing about it. All he could do was insist that they obey the rules completely during the match, so Snape would have no excuse to pick on them.
But Harry Potter, the Seeker, had another concern. He believed Professor Snape had volunteered to referee so he could deliberately get close to him. Ron shared the same view and offered a suggestion. "Don't play. Just say you're sick, like you broke your leg or something."
"I can't do that," Harry said. "There's no substitute Seeker on the team. If I pull out, Gryffindor won't be able to play."
Just then, Neville tumbled headfirst into the common room. No one could figure out how he had made it through the portrait hole, because his legs were stuck tightly together. Harry and the others recognized at once that he had been hit by the Leg-Locker Curse. He must have bounced all the way upstairs like a rabbit to get into Gryffindor Tower.
The two of them burst out laughing, but once they had stopped, they had no idea how to undo the Leg-Locker Curse. In the end, Harry suggested they go to the library and ask Ye Ting for help, because among all the young wizards Harry knew, Ye Ting's magic was the most advanced.
"I know where he is," Ron reminded them. "Just now, while I was looking for clues about Nicolas Flamel in the library, he was reading with Hermione Granger. I really